KR102005810B1 - Electronic device and method for operating electronic device - Google Patents

Abstract

The present invention relates to an electronic device and a method of operating the electronic device, the handover of the electronic device and the electronic device capable of effectively establishing a connection between the electronic device by transmitting the connection information of the two or more electronic devices to the other party Provide a method of operation.

Description

ELECTRONIC DEVICE AND METHOD FOR OPERATING ELECTRONIC DEVICE}

The present invention relates to a method for forming a connection of an electromagnetic period. More specifically, the present invention relates to a method of using near field communication means to form a connection of an electromagnetic period.

Near Field Communication (NFC) is a very short-range contactless data transfer technology related to radio frequency identification (RFID), which is within 10 cm (preferably within 4 cm). It can be used for communication with devices located in the street.

Near field communication uses a center frequency of 13.56 MHz and can provide transmission rates of 106, 212, and 424 kbps. Near field communication may be compatible with various contactless communication protocols. For example, NFC may be compatible with protocols defined in ISO 14443 type A, B, F, and ISO 18092.

Short-range wireless communication may be applied to various fields, for example, home network implementation, smart posters, bus ticketing, and the like.

Electronic devices employing NFC technology may be coupled with other electronic devices employing NFC technology through, for example, at least one of a reader mode, a card emulation mode, and a peer to peer mode. Can communicate.

SUMMARY OF THE INVENTION The present invention provides a method for forming a connection between two or more electronic devices using a short range communication link.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned. In addition, other technical problems to be achieved by the present invention will be clearly understood by those skilled in the art from the following description.

An intermediary method of a communication link by a first electronic device according to an aspect of the present invention includes: transmitting a first request message from the first electronic device to a second electronic device; Receiving, as a response to the first request message, from the second electronic device a first response message comprising information relating to first alternative communication means supported by the second electronic device; Transmitting a second request message from the first electronic device to a third electronic device; Receiving, as a response to the second request message, from the third electronic device a second response message comprising information relating to second alternative communication means supported by the third electronic device; And establishing a communication link between the second electronic device and the third electronic device through one alternative communication means selected based on the information related to the first alternative communication means and the information related to the second alternative communication means. Requesting.

According to another aspect of the present invention, a method of mediating a communication link by a first electronic device comprises receiving, from a second electronic device, a message comprising information relating to first alternative communication means supported by the second electronic device. step; Transmitting a first request message from the first electronic device to a third electronic device; Receiving, as a response to the first request message, from the third electronic device a first response message comprising information relating to second alternative communication means supported by the third electronic device; And establishing an communication link between the second electronic device and the third electronic device by one alternative communication means selected based on the information related to the first alternative communication means and the information related to the second alternative communication means. Requesting.

According to the present invention, two or more electronic devices can communicate by alternative communication means, even outside the NFC communication range.

Further, according to the present invention, even when two or more electronic devices to perform handover are low in mobility, even between two or more low-mobility electronic devices through a high mobility electronic device, by means of an alternative communication means. You can easily open a connection.

1 is a block diagram of an electronic device in accordance with some embodiments of the present invention.
2 is a view for explaining a handover according to a first embodiment of the present invention.
3 is a view for explaining a handover according to a second embodiment of the present invention.
4 is a view for explaining a handover according to a third embodiment of the present invention.
5 is a view for explaining a handover according to a fourth embodiment of the present invention.
6 is a view for explaining a handover according to a fifth embodiment of the present invention.
7 is a view for explaining an environment requiring a handover mediated protocol according to another embodiment of the present invention.
8 is a schematic diagram illustrating a connection handover mediation according to another embodiment of the present invention.
9 is a diagram for explaining a handover mediation protocol according to a first embodiment of the present invention.
10 is a view for explaining a guide message used in the handover mediated protocol of the present invention.
11 is a diagram for explaining a handover mediation protocol according to a second embodiment of the present invention.
12 to 13 are diagrams for explaining a handover mediated protocol according to a third embodiment of the present invention.
14 is a diagram for explaining a handover mediation protocol according to a fourth embodiment of the present invention.
15 is a diagram for explaining a handover mediation protocol according to a fifth embodiment of the present invention.
16 is a diagram for explaining a handover mediation protocol according to a sixth embodiment of the present invention.
17 is a diagram for explaining a handover mediation protocol according to a seventh embodiment of the present invention.
18 is a diagram for explaining a handover mediation protocol according to an eighth embodiment of the present invention.
19 to 23 are diagrams for explaining a handover mediation protocol according to a ninth embodiment of the present invention.
24 is a diagram for explaining a handover mediation protocol according to a tenth embodiment of the present invention.
25 is a diagram for explaining a handover mediation protocol according to an eleventh embodiment of the present invention.
FIG. 26 illustrates a handover mediation protocol according to a twelfth embodiment of the present invention. FIG.
27 to 28 are diagrams for explaining a handover mediation protocol according to a thirteenth embodiment of the present invention.
29 illustrates a general structure of a handover protocol and a handover mediated protocol message according to embodiments of the present invention.
30 to 32 illustrate an example of a handover request message according to embodiments of the present invention.
33 illustrates an example of a handover selection message according to an embodiment of the present invention.
34 shows an example of a handover request record according to an embodiment of the present invention.
35 illustrates an example of a handover selection record according to embodiments of the present invention.
36 shows an example of a handover communication means record according to an embodiment of the present invention.
37 shows an example of an alternate communication means record according to an embodiment of the present invention.

The above objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. However, the present invention may be modified in various ways and may have various embodiments. Hereinafter, specific embodiments will be illustrated in the drawings and described in detail. Like numbers refer to like elements throughout.

In addition, when it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, numerals (eg, first, second, etc.) used in the description process of the present specification are merely identification symbols for distinguishing one component from another component.

Hereinafter, an electronic device according to the present invention will be described in detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other.

1 illustrates a system environment according to one embodiment of the invention.

The system environment according to an embodiment of the present invention may be configured with one or more near field communication (NFC) electronic devices capable of forming an NFC link.

Referring to FIG. 1, a system environment according to an embodiment of the present invention may be composed of one or more electronic devices 100, 200, and 300. This is not an essential configuration and may include fewer or more configurations than this. The electronic devices 100, 200, and 300 mentioned in this document refer to any electronic device that supports NFC communication. For example, the electronic device may be a mobile data processing device (eg, a mobile phone, a smart device) that supports NFC communication. It may include various electronic devices such as a phone, an e-book, a printer, a TV, a DTV, a computer, a tablet, and an audio device. This is only an example of the electronic device 100, 200, 300, and may include more various types of devices. Hereinafter, the electronic device may be referred to as an NFC electronic device.

As shown in FIG. 1, the electronic device 100 may include a host 110, an NFC communication module 120, and one or more alternative communication carrier modules.

The host 110 may provide a function of a processor for controlling the components in the electronic device 100. For example, the host 110 may output and / or receive various signals for controlling the NFC communication module 120 and one or more alternative communication means shown in FIG. 1. Hereinafter, the host 110 may be referred to as a processor 110 or a controller.

The NFC communication module 120 allows the electronic device 100 to form an NFC link with other electronic devices 200 and 300 that support NFC communication. The NFC communication module 120 may refer to an NFC forum device. In this document, the NFC communication module may be referred to as short range communication means.

As illustrated in FIG. 1, the NFC communication module 120 may form an NFC link through tagging with an NFC communication module of another electronic device within an NFC communication range.

The NFC communication module 120 may communicate with the NFC communication module of the other electronic device 200 or 300 in various modes. For example, the various modes may include a card emulation mode, a reader mode, and a peer to peer mode.

When the NFC communication module 120 operates in the card emulation mode, the NFC communication module 120 of the electronic device 100 may function as a card, that is, a tag. In this case, the NFC communication module of the other electronic device may operate in a reader mode to obtain data from the NFC communication module 120 of the electronic device 100.

When the NFC communication module 120 operates in the reader mode, the NFC communication module 120 of the electronic device 100 may function as a reader. In this case, the NFC communication module 120 of the electronic device 100 may obtain data from the NFC communication module of another electronic device operating in an emulation mode.

When the NFC communication module 120 operates in the peer to peer mode, the NFC communication module 120 of the electronic device 100 and the NFC communication module of another electronic device exchange data with each other. (exchange)

The mode of the NFC communication module 120 may be determined according to a predetermined criterion. For example, the mode of the NFC communication module 120 may be set according to a user's input or a predetermined algorithm.

The alternative communication communication means refers to a communication technology that can be used for data transmission in the electromagnetic period, and the alternative communication communication means may include various communication modules other than the NFC communication communication means. For example, the alternate communication communication means may include at least one of a Bluetooth (802.15.1 IEEE) communication module 132 and a Wi-Fi (Wireless Fidelity) communication module 134, as shown in FIG. Can be. In addition, the alternative communication communication means may include a variety of communication means, such as radio frequency identification (RFID), a wireless Gigabit (WiGig) communication module, and may also include communication means to be implemented in the future as well as in the future. Hereinafter, the alternative communication communication means may be referred to as alternative communication means or alternative communication means.

The electronic device 100 may include an input unit 140 for receiving an input from a user. For example, the input unit 140 may be at least one of a keyboard, a mouse, and a touch screen.

In addition, the electronic device 100 may include an output unit 150 for outputting information to the user. The output unit 150 may include at least one of a sound output unit for outputting a sound signal and a display unit for display.

In addition, the electronic device 100 may include a memory 160 for storing various types of data.

The electronic devices 200 and 300 may include components corresponding to the electronic device 100. That is, the electronic device 200, 300 may include a host, an NFC communication module, and an alternative communication communication means. In addition, the electronic devices 200 and 300 may further include at least one of the input unit 140, the output unit 150, and the memory unit 160 described above. An internal configuration of the electronic devices 200 and 300 will be described with reference to FIGS. 2 to 5.

For convenience of description, the electronic device 100 may be referred to as a first electronic device 100, and the electronic device 200 may be referred to as a second electronic device 200 as necessary. Is referred to as a third electronic device (300).

The electronic device 100 may continuously perform data communication with the other electronic device by changing a communication module with an alternative communication communication means after forming an NFC link through another electronic device and the NFC communication module 120. have. In this document, after the NFC link is formed, the electronic device and the other electronic device may use the alternative communication communication means so that the electronic device and the other electronic device can continuously communicate using the alternative communication communication means. A series of procedures for linking by hand is called handover.

In other words, the handover is that the electronic device 100 and the other electronic device forms an NFC link, and then forms a link as an alternative communication communication means to communicate data, the user 100 After the NFC link is easily formed through NFC tagging and other electronic devices, the communication means may be changed to an alternative communication communication means suitable for transmitting data at a far distance and / or higher capacity than the NFC link.

Hereinafter, with reference to the drawings, a handover according to an embodiment of the present invention will be described in more detail. For convenience of description, reference will be made to the system environment shown in FIG. 1. However, since this is only for convenience of description, the technical spirit of the present invention is not limited to a specific environment or a specific device.

2 is a view for explaining a handover according to a first embodiment of the present invention.

Referring to FIG. 2, the first electronic device 100 may transmit a handover request message to the second electronic device 200 (S110).

Prior to the step S110, the first electronic device 100 and the second electronic device 200 located within the NFC communication range may form an NFC link through tagging.

The first electronic device 100 may transmit a message for a handover request, for example, a handover request message, to the second electronic device 200 through the NFC link in the state in which the NFC link is formed.

The first electronic device 100 transmits the handover request message to the second electronic device 200, so that the first electronic device 100 and the second electronic device 200 are currently present in the first electronic device 100. A protocol for changing the NFC link formed between the electronic device 100 and the second electronic device 200 to another communication means may be disclosed.

Detailed information included in the handover request message will be described later.

Here, the first electronic device 100 may have a status of a handover requester, and the second electronic device 200 may have a status of a handover selector. The handover requester refers to a device initiating a handover protocol by transmitting a handover request message to another NFC electronic device, and the handover selector configures a handover selection message as a response to the received handover request message. You can say the NFC device responding. That is, the handover requester (i.e. handover request device) and the handover selector (i.e. handover select device) are relative concepts determined depending on whether the handover request message is transmitted or not. Therefore, when the second electronic device 200 transmits the handover request message to the first electronic device 100 according to a situation, the first electronic device 100 becomes a handover selector. Of course, the second electronic device 200 may be a handover requester.

The handover request message may include information related to an alternative communication means supported by the first electronic device 100. For example, as shown in FIG. 1, since the first electronic device 100 supports Bluetooth and Wi-Fi, the handover request message may include Bluetooth and Wi- supported by the first electronic device 100. It may include information about Fi. A detailed data format included in the handover request message will be described later.

A plurality of alternative communication means may be assigned a priority. For example, as shown in FIG. 2, the handover request message may include information about an alternative communication means having a higher priority on the front side and information about an alternative communication means having a lower priority on the back side. . Referring to the handover request message shown in FIG. 2, it can be seen that Wi-Fi, which is an alternative communication means, has a higher priority than Bluetooth. Alternatively, there may be a separate field in which the priority for each communication means is described.

Upon receiving the handover request message, the second electronic device 200 may transmit a response to the handover request message to the first electronic device 100 [S120].

For example, the second electronic device 200 generates a handover selection message as an example of a response to the handover request message through an NFC link, and transmits the generated handover selection message to the first electronic device. It may transmit to the device 100.

The second electronic device 200 determines which of the alternative communication means supported by the second electronic device 200 is included in the alternative communication means included in the handover request message, and according to the determination, the first electronic device The device 100 may be provided with information on alternative communication means supported by the second electronic device 200. That is, the alternative communication means included in the handover selection message may include information on the alternative communication means supported by the second electronic device 200 among the alternative communication means supported by the first electronic device 100. have.

As shown in FIG. 2, the second electronic device 200 supports Wi-Fi as an alternative communication means, but does not support Bluetooth.

In this case, the handover selection message may include information on a Wi-Fi communication module supported by the second electronic device 200 as information on an alternative communication means.

Detailed information included in the handover selection message will be described later.

The first electronic device 100 may perform data communication with the second electronic device 200 through an alternative communication means [S130].

To this end, the first electronic device 100 may receive the handover selection message from the second electronic device 200 to obtain information on an alternative communication means supported by the second electronic device 200. Can be. For example, the first electronic device 100 may identify that the alternative communication means supported by the obtained second electronic device 200 is Wi-Fi.

Therefore, the first electronic device 100 is handed over to a communication means different from the second electronic device 200 based on information obtained by transmission and reception of the handover request message and the handover selection message. You can carry out a series of procedures. As a result, the first electronic device and the second electronic device can switch from the NFC link to the Wi-Fi link to continue communication according to the Wi-Fi protocol.

As the link between the first electronic device 100 and the second electronic device 200 is handed over from NFC to Wi-Fi, the first electronic device 100 and the second electronic device 200 are further Even if it is not located within the NFC communication range shown in FIG. 2, data communication becomes possible, and the advantage of exchanging data at a faster transmission speed than the NFC link occurs.

In other words, when the first electronic device 100 is a smart phone, the user brings the smart phone near the second electronic device 200 and tags the second electronic device 200 to establish an NFC link. By forming and performing the handover protocol, the link means can be changed to Wi-Fi. After the link means is changed, even if the user takes the smartphone out of the NFC communication range, the smartphone and the second electronic device 200 can continue data communication via Wi-Fi.

The handover process according to steps S110 to S130 described above will be referred to as a negotiated handover. In other words, the negotiation handover means that two NFC first electronic devices 100, for example, electronic devices 100 and 200 exchange messages for agreement on an alternative communication means used for data exchange.

3 is a view for explaining a handover according to a second embodiment of the present invention.

In the description of the handover according to the second embodiment with reference to FIG. 3, a description of overlapping contents with the first embodiment described with reference to FIG. 2 will be omitted.

Unlike the second electronic device 200 illustrated in FIG. 2, the third electronic device 300 illustrated in FIG. 3 may simultaneously support a plurality of alternative communication means, for example, Bluetooth and Wi-Fi.

The first electronic device 100 may transmit a handover request message to the third electronic device 300 [S210]. In other words, the first electronic device 100 becomes a handover requester, and the third electronic device 300 becomes a handover selector. Since step S210 is the same as step S110 described with reference to FIG. 2, description thereof will be omitted.

The third electronic device 300 may transmit a handover selection message to the first electronic device 100 as a response to the received handover request message [S220].

The handover selection message transmitted by the third electronic device 300 may include information about Wi-Fi and Bluetooth which are alternative communication means. In addition, the handover selection message may give priority to Wi-Fi by displaying Wi-Fi in front of Bluetooth as shown in FIG. 3.

The first electronic device 100 may communicate with the third electronic device 300 through an alternative communication means [S230].

The first electronic device 100 may determine that there are a plurality of alternative communication means supported by the third electronic device 300 from the handover selection message obtained in step S120.

The first electronic device 100 may select one of a plurality of alternative communication means when the handover selector, that is, the plurality of alternative communication means supported by the third electronic device 300, may select all of the plurality of alternative communication means. You can also select. In addition, when the first electronic device 100 selects one alternative communication means, the first electronic device 100 is replaced according to the priority of the alternative communication means designated by the third electronic device 300. The communication means may be selected, or the alternative communication means preferred by the first electronic device 100 may be selected regardless of the priority of the alternative communication means designated by the third electronic device 300.

Referring to FIG. 3, the first electronic device 100 may select Bluetooth as an alternative communication means regardless of the priority of the alternative communication means given by the third electronic device 300, which is the handover selector.

4 is a view for explaining a handover according to a third embodiment of the present invention.

Since step S310 illustrated in FIG. 4 is the same as step S210 described with reference to FIG. 3, a description thereof will be omitted.

The third electronic device 300 may transmit a handover selection message to the first electronic device 100 [S330]. In this case, as shown in FIG. 4, the handover selection message may give priority to Bluetooth among a plurality of alternative communication means, Bluetooth and Wi-Fi.

In this case, the first electronic device 100 may first attempt Bluetooth pairing according to a priority specified by the third electronic device 300, which is a handover selector, from among a plurality of alternative communication means [S330]. .

The Bluetooth paring may fail due to various causes. For example, when the first electronic device 100 and the third electronic device 300 are located outside the Bluetooth signal range during the handover protocol, Bluetooth pairing may fail.

Meanwhile, when the handover protocol is in progress, the first electronic device 100 and the third electronic device 300 are located within the Bluetooth signal range, and are handed over to Bluetooth, during the data exchange through the Bluetooth link. If both devices are located outside the Bluetooth signal range for movement of at least one of the electronic device 100 and the third electronic device 100, the Bluetooth link may fail.

At this time, the first electronic device 100 may continue data communication with the third electronic device 300 through Wi-Fi, which is an alternative communication means having a lower rank [S340].

5 is a view for explaining a handover according to a fourth embodiment of the present invention.

Since step S410 illustrated in FIG. 5 is the same as step S310 described above with reference to FIG. 4, a description thereof will be omitted.

The third electronic device 300 illustrated in FIG. 5 may transmit a handover selection message to the first electronic device 100 in response to the handover request message received from the first electronic device 100 (S420). ].

In this case, the handover selection message may include power state information of an alternative communication means provided by the third electronic device 300.

For example, when there is an alternative communication means supported by the third electronic device 300 among the alternative communication means supported by the first electronic device 100, the third electronic device 300 includes the first electronic device 300. The third electronic device 300 may transmit information about a power state of each of the alternative communication means supported by the electronic device 300, for example, active and inactive, to the first electronic device 100.

For example, as shown in FIG. 5, the handover selection message may include information indicating that Bluetooth and Wi-Fi, which are alternative communication means of the first electronic device 100, are deactivated.

When the received handover selection message includes information on a plurality of alternative communication means, the first electronic device 100 may select any alternative communication means as described above. In the present embodiment, it is assumed that the first electronic device 100 selects Wi-Fi as an alternative communication means.

The first electronic device 100 transmits a handover request message back to the third electronic device 300 [S430]. In this case, the handover request message transmitted in step S430 may designate one alternative communication means among the plurality of alternative communication means received. That is, the first electronic device 100 assigns a handover request message for specifying Wi-Fi as an alternative communication means and specifying only Wi-Fi as an alternative communication means in step S430 to the third electronic device 300. By transmitting, the Wi-Fi module of the third electronic device 300 may be activated.

The third electronic device 300 activates the power of the Wi-Fi module according to the handover request message received in step S430, and sends a response message to the handover request message received in step S430. It may transmit to the device 100 [S440].

The first electronic device 100 may exchange data with the first electronic device 100 through Wi-Fi (S450).

In other words, when the Wi-Fi module is activated in the third electronic device 300, the first electronic device 100 may form a Wi-Fi link with the third electronic device 300. That is, the first electronic device 100 may handover the NFC link with the third electronic device 300 to the Wi-Fi link.

According to the embodiment described with reference to FIG. 5, the third electronic device 300, which is a handover selector, deactivates the power supply of the alternative communication means until a specific communication means is selected from a plurality of alternative communication means. It can provide an effect that can reduce the cost.

6 is a view for explaining a handover according to a fifth embodiment of the present invention.

In the handover according to the fifth embodiment of the present invention, unlike the aforementioned handover selection device, the handover selection device may have two separate configurations. That is, in the fifth embodiment, the handover selection device may be separated into the fourth electronic device 400 and the NFC device 500.

As shown, the fourth electronic device 400 may include a host and an alternative communication communication means. For example, the alternate communication communication means may be a Wi-Fi communication module.

In addition, the fourth electronic device 400 does not include the NFC device 500. That is, since the fourth electronic device 400 does not support the NFC communication function, it may not be possible to form an NFC connection with the first electronic device 100.

The NFC device 500 illustrated in FIG. 6 may include information for connecting to Wi-Fi of the electronic device 400. The NFC device 500 may include information necessary for accessing the Wi-Fi of the electronic device 400 as a handover selection message. The handover selection message may include a handover selection record and additional information, which will be described later. It may include.

By tagging the NFC device 500, the first electronic device 100 may receive a handover selection message from the NFC device 500 [S490].

The first electronic device 100 receiving the handover selection message may form a Wi-Fi connection with the fourth electronic device 400 based on the handover selection message [S500].

Unlike the negotiation handover described above, the handover described with reference to FIG. 6 will be referred to as a static handover.

In the above description, a handover protocol has been described in which two electronic devices easily form an NFC link through tagging, and then perform communication using an alternative communication communication device suitable for transmitting data at a distance and / or higher capacity than the NFC link. .

However, if the two electronic devices to which the handover is to be performed are electronic devices with low mobility, the two electronic devices may not be easy to form a short range communication link. For example, when the first electronic device 100 is a DTV having an NFC communication module, and the second electronic device 200 is a computer having an NFC communication module, the DTV and the computer are bulky and heavy so that the NFC It is not easy to form a communication link. That is, it may not be easy to perform the handover protocol by forming the NFC link.

In this case, the connection of the electronic devices with low mobility can be established through the electronic device with high mobility. As described above, when the first electronic device 100 is a DTV and the second electronic device 200 is a computer, the third electronic device 300 having high mobility, for example, a smart phone is the DTV. And handover protocol of the computer.

As such, an electronic device that intends to perform a handover protocol is in a fixed position, and handover mediation is performed by an electronic device having a high mobility in the middle so as to establish a communication channel between the fixed electronic devices. Let's name it. Since the handover parameter is an arbitrary name, it may be called various names such as handover mediation, handover mediation, handover relay, connection information relay, and multi tagging for a link. These names are optional and can be modified and used according to the symbols of those skilled in the art. Hereinafter, for convenience of description, it will be referred to as handover mediated protocol.

Hereinafter, a handover parameter protocol according to another embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

7 is a view for explaining an environment requiring a handover mediated protocol according to another embodiment of the present invention.

As shown in FIG. 7, it is assumed that the DTV supports NFC and Wi-Fi communication, the PC supports NFC, Wi-Fi, and Bluetooth communication, and the printer supports NFC and Bluetooth communication. However, alternative communication means supported by the electronic devices are not limited to Wi-Fi and Bluetooth communication.

In addition, it is assumed that the DTV, PC, and printer are located outside the NFC communication range with each other. In such a case, it may not be easy for the user to implement a handover protocol between the DTV and the PC or the printer and the PC. That is, the user may have difficulty moving the DTV and the PC so that they are located within the NFC communication range. Therefore, the NFC link between the DTV and the PC is not easy to establish a Wi-Fi connection through the handover protocol. For the same reason, it is not easy to establish a Bluetooth connection through the handover protocol because the NFC link is not easily formed between the printer and the PC.

In this case, a handover mediation protocol may be used to establish a Wi-Fi connection between the DTV and the PC and to establish a Bluetooth connection between the printer and the PC.

Hereinafter, the handover parameter protocol described above will be described in detail.

8 is a schematic diagram illustrating a connection handover mediation according to another embodiment of the present invention. In the following description, for the sake of effective explanation, it is assumed that the first electronic device 100 shown in FIG. 8 is a smart phone, and the second electronic device 200 is assumed to be a DTV. It is assumed that 300) is a PC. However, since the smart phone, the DTV and the PC are only examples, the first to third electronic devices may include more various types of devices. In addition, the handover media may be performed between a plurality of electronic devices in addition to the first to third electronic devices.

As shown in FIG. 8, since the second electronic device 200 and the third electronic device 300 are located outside the NFC communication link with each other, it may not be easy to perform the handover protocol by forming the NFC communication link. . Alternatively, even if the second electronic device 200 and the third electronic device 300 are located within the range of the NFC communication link, it may not be easy to perform a handover protocol through the NFC communication link due to low mobility.

Here, the first electronic device 100 may move within a radius R1 which is an NFC communication range of the second electronic device 200. Since the first electronic device 100 moves within a radius R1 of the NFC communication range of the second electronic device 200, the first electronic device 100 establishes an NFC communication link with the second electronic device 200. Can be formed. The first electronic device 100 may obtain information related to alternative communication means supported by the second electronic device 200 from the second electronic device 200 through the NFC communication link. Information related to the alternative communication means will be described later.

In addition, the user may input a message for requesting execution of a handover mediated protocol with the second electronic device 200 through the input unit 140 of the first electronic device 100. In addition, when the first electronic device 100 obtains information related to the communication means supported by the second electronic device 200 from the second electronic device 200 according to the message, the first electronic device 100 100 may inform the user that information related to the communication means of the second electronic device 200 has been obtained through the output unit 150.

In addition, the first electronic device 100 may move within a radius R2 that is an NFC communication range of the third electronic device 300. Since the first electronic device 100 moves within a radius R2 which is an NFC communication range of the third electronic device 300, the first electronic device 100 establishes an NFC communication link with the third electronic device 300. Can be formed. Here, the first electronic device 100 may obtain information related to alternative communication means supported by the third electronic device 300 from the third electronic device 300 through the NFC communication link. . Alternatively, the first electronic device 100 may transmit information related to an alternative communication means supported by the second electronic device 300 obtained from the second electronic device 200 to the third electronic device.

Here, the user may input a message for requesting execution of the handover mediated protocol with the third electronic device 300 through the input unit 140 of the first electronic device 100. In addition, when the first electronic device 100 obtains information related to the communication means supported by the second electronic device 200 from the third electronic device 300 according to the message, the first electronic device 100 The information indicating that the information related to the communication means of the third electronic device 300 has been obtained through the output unit 150 or the information related to the communication means obtained from the second electronic device 200 Information indicating that the information is transmitted to the third electronic device 300 may be output.

In addition, at least one commonly used by the second electronic device 200 and the third electronic device 300 by at least one of the first electronic device 100 to the third electronic device 300. Alternative communication means may be selected. A communication link between the second electronic device 200 and the third electronic device 300 may be established through the selected at least one alternative communication means.

Here, the first electronic device 100 may serve as a handover mediator for a handover mediated protocol for each of the second electronic device 200 and the third electronic device 300. Can be.

Hereinafter, various embodiments of establishing a connection using the handover mediation protocol outlined with reference to FIG. 8 will be described in more detail with reference to the accompanying drawings. An embodiment of the handover mediation protocol to be described below is merely an example, and the technical spirit of the present invention is not limited thereto.

9 is a diagram for explaining a handover mediation protocol according to a first embodiment of the present invention. Referring to FIG. 9, a method of establishing a communication link between the second electronic device 200 and the third electronic device 300 through the first electronic device 100 shown in FIG. 9 will be described. .

The first electronic device 100 is connected to the second electronic device 200 through an NFC communication link formed between the first electronic device 100 and the second electronic device 200 described with reference to FIG. 8. The first handover request message may be transmitted to the first handover request message in operation S610, and the second electronic device 200 may respond to the first handover request message, and may use a first alternative communication means supported by the second electronic device. In operation S630, a first response message including information related to the transmission may be transmitted.

In addition, the first electronic device 100 may be connected to the third electronic device through an NFC communication link formed between the first electronic device 100 and the third electronic device 200 described with reference to FIG. 8. A second handover request message to the second electronic device 300 (S650), and the third electronic device 300 responds to the second handover request message and replaces the second handover supported by the third electronic device. The second response message including the information related to the communication means may be transmitted [S670].

Here, the first handover request message and the second handover request message, request the capability (Capability) for the alternative communication means supported by the second electronic device 200 and the third electronic device (300) It may be a message. In this case, the structures of the first handover request message and the second handover request message may be different from the handover request message used in the handover protocol described above.

Accordingly, the first response message and the second response message may include capabilities for alternative communication means supported by the second electronic device 200 and the third electronic device 300. The first response message and the second response message may be referred to as a handover capability messages.

Detailed forms of the handover request message and the handover capability messages will be described later.

The information related to the first and second alternative communication means may include at least a name and configuration information of the alternative communication means. For example, when the alternative communication means supported by the second electronic device 200 is Wi-Fi, the name of the alternative communication means supported by the second electronic device 200 includes information that Wi-Fi. can do. For example, the setting information may be connection information necessary for establishing a Wi-Fi link with the second electronic device 200 or a separate Wi-Fi AP (access) for the second electronic device 200. Point) may include access information necessary to access the Wi-Fi AP.

In this case, the second electronic device 200 and the third electronic device 300 may provide a plurality of alternative communication means, and when the alternative communication means is one or more, information related to the alternative communication means is one. It may be abnormal.

Accordingly, the second electronic device 200 or the third electronic device 300 through one alternative communication means selected based on the information related to the first alternative communication means and the information related to the second alternative communication means. Connection of the communication link between the second electronic device 200 and the third electronic device 300 may be initiated by [S690]. FIG. 9A illustrates a case where the connection of the communication link is started by the third electronic device 300 as an example.

Here, the first electronic device 100 is based on the information related to the first alternative communication means and the information related to the second alternative communication means, the second electronic device 200 and the third electronic device ( One alternative communication means commonly supported at 300 may be selected.

At this time, when there is one or more alternative communication means commonly supported by the second electronic device 200 and the third electronic device 300, the first electronic device 100 automatically prioritizes the priority of the alternative communication means. Can be selected. Alternatively, the first electronic device 100 may select one alternative communication means according to a priority given by any one device of the first electronic device 100 to the third electronic device 300. . In addition, one alternative communication means commonly supported by the second electronic device 200 and the third electronic device 300 may include the second electronic device 200 or the second electronic device in addition to the first electronic device 100. Of course, it can be selected by the third electronic device (300). In addition, a user may designate a desired alternative communication means through a user interface.

Accordingly, the second electronic device 200 and the third electronic device are provided through one alternative communication means selected by any one device or user of the first electronic device 100 to the third electronic device 300. Connection of the communication link between the devices can be initiated.

Meanwhile, the first electronic device 100 may request the second electronic device 200 or the third electronic device 300 to initiate connection of a communication link through the selected alternative communication means. Hereinafter, referring to FIG. 9B, the first electronic device 100 may initiate connection of the communication link with respect to the second electronic device 200 or the third electronic device 300. An example of transmitting a separate message requesting the request will be described.

Referring to FIG. 9B, the first electronic device 100 may transmit a separate message requesting to initiate a connection of a communication link through the selected alternative communication means. It may transmit to the third electronic device 300 (S660). The message requesting to initiate the connection of the communication link may be referred to as a handover initiate request message. The handover initiation request message may include information related to the first alternative communication means or information related to the second alternative communication means, or alternative communication selected by the first electronic device 100 or the user. Information relating to the means may be included.

In addition, the second electronic device 200 or the third electronic device 300 may transmit a handover initiation response message in response to the handover initiation request message [S680]. The handover initiation response message may include information on whether to confirm establishment of a communication link by an alternative communication means included in the handover initiation request message. Accordingly, the response message may include a message acknowledging the establishment of the communication link by the selected alternative communication means, wherein the second electronic device 200 or the third electronic device 300 is connected to the communication link. Can be initiated [S690].

Here, as shown in FIG. 9B, when the first electronic device 100 wants to request the start of the communication link to the second electronic device 200, the first electronic device ( The third handover request 100 confirms whether the second electronic device 200 is a version that supports a handover mediated protocol for backward compatibility before transmitting the handover initiation request message. The message may be transmitted [S620].

In addition, the third handover request message may have the same structure as the first handover request message and the second handover request message described with reference to FIG. 9A. Also, the second electronic device 200 may transmit a third response message to the third handover request message, and the third response mesh may be the handover capability message described with reference to FIG. 9A. It may have the same structure as (Handover Capabilities Message).

Meanwhile, a case in which the second electronic device 200 and / or the third electronic device 300 is not a version supporting the handover mediation protocol according to another embodiment of the present invention will be described later.

Accordingly, even when the second electronic device 200 and the third electronic device are outside the NFC communication range or even within the NFC communication range due to low mobility, it is difficult to connect through the NFC communication link. As shown in (b), communication may be performed through an alternative communication means through the first electronic device 100.

FIG. 10 is a diagram for describing a guide message used for a handover mediation protocol according to a first embodiment of the present invention. FIG.

First, the user may instruct the first electronic device 100 to execute the handover mediated protocol by selecting the handover media through the user interface output in FIG. 10A. On the other hand, the second electronic device 200 may of course output the user interface shown in (a) of FIG. Hereinafter, for convenience of description, a description will be made based on the first electronic device 100, but the same user interaction as that of the first electronic device 100 is also performed in the second electronic device 200. Of course it can provide.

The first electronic device 100 is information related to the first alternative communication means supported by the second electronic device 200 through an NFC communication link within an NFC communication range of the second electronic device 200. Next, as shown in FIG. 10B, a guide message for moving to another electronic device to perform handover mediation may be output.

In addition, when the first electronic device 100 does not have an alternative communication means supported by the second electronic device 200 or the third electronic device 300 in step S630 or S670, for example, As illustrated in (c) of FIG. 10, a guide message indicating that there is no communication means supported by the third electronic device may be output.

In addition, when there are a plurality of alternative communication means commonly supported by the second electronic device 200 and the third electronic device 300, for example, as shown in (d) of FIG. And when Bluetooth is supported, the user selects Wi-Fi from the user interface output by the first electronic device 100, thereby establishing a communication link between the electronic device 200 and the third electronic device 300. As an alternative communication means to be used, Wi-Fi can be designated.

In addition, when the connection of the communication link through the alternative communication means between the second electronic device 200 and the third electronic device 300 through the first electronic device 100 as described in step S690 As shown in FIG. 10E, the first electronic device 100 includes at least one of the second electronic device 200, the second electronic device 200, and the third electronic device 300. One may output information indicating that a connection is opened through each output unit.

11 is a diagram for explaining a handover mediation protocol according to a second embodiment of the present invention. Here, of course, the same user interaction described with reference to FIG. 10 may be provided.

Referring to (a) and (b) of FIG. 11, the first electronic device 100 and the second electronic device 200 may provide information related to an alternative communication means supported by the second electronic device 200. It is possible to obtain and exchange messages for obtaining information related to the alternative communication means [S710].

Here, the first electronic device 100 is connected to the second electronic device through an NFC communication link formed between the first electronic device 100 and the second electronic device 200 described with reference to FIG. 8. A message for acquiring information related to an alternative communication means supported by 200 may be transmitted, and such a message may be referred to as a handover get message as described above with reference to FIG. . In addition, the second electronic device 200 may transmit a message including information related to the first alternative communication means supported by the second electronic device 200 in response to the handover acquisition message. Such a message may be referred to as a handover select message.

In addition, the handover acquisition message and the handover selection message may correspond to the handover request message and the handover capability message described with reference to FIG. 9, and may have the same structure.

On the other hand, if there is no alternative communication means supported by the second electronic device 200 or if the communication link through the alternative communication means is not desired, the handover selection message does not include information related to the alternative communication means. You may not.

In addition, as shown in FIG. 11A, the first electronic device 100 may move within the NFC communication range of the third electronic device 300 [S730]. In addition, as shown in (a) and (b) of FIG. 11, information related to the first alternative communication means obtained from the second electronic device 200 may be transmitted to the third electronic device 300. And exchange a message for transmitting information related to the first alternative communication means [S750].

Here, the first electronic device 100 is connected to the third electronic device through an NFC communication link formed between the first electronic device 100 and the third electronic device 200 described with reference to FIG. 8. 300, a message for transmitting information related to the first alternative communication means may be transmitted. In this case, since the first electronic device 100 merely transfers information related to the first alternative communication means obtained in step S710, the hand is distinguished from the handover get message described in step S710. It may also be referred to as a handover put message. In addition, the third electronic device 300 may transmit a response message including information related to initiation of a communication link with respect to the handover providing message.

Herein, the information related to the start of the communication link included in the response message is included in the information related to the first alternative communication means included in the handover providing message by the third electronic device 300. Information on whether or not to affirm the connection of the communication link by the alternate communication means.

For example, if the third electronic device 300 may transmit a response message acknowledging the connection of the communication link by the at least one alternative communication means, in which case the response message is a handover acknowledgment message. It may be called (Handover ACK Message). The handover acknowledgment message may include information on which of the second electronic device 200 and the third electronic device 300 will initiate connection of the communication link. Can be.

Meanwhile, when there are a plurality of alternative communication means included in the information related to the first alternative communication means included in the handover acquisition message, the third electronic device 300 may select one alternative communication means. It may be included in the response message. Accordingly, the first electronic device 100 may transmit the selected electronic device 100 to the second electronic device 200 or the third electronic device 300 based on the information included in the response message. Request the initiation of a communication link.

Further, for example, when the third electronic device 300 does not want to connect the communication link by the at least one alternative communication means or when the connection of the communication link by the at least one alternative communication means is impossible, A response message may be transmitted to deny connection of the communication link, and in this case, the response message may be referred to as a handover NACK message.

In addition, as shown in (a) and (b) of FIG. 11, when the third electronic device 300 initiates the connection of the communication link, the third electronic device 300 is the second electronic device. In operation 200, a message requesting to establish a connection of the communication link may be transmitted (S770). The message requesting to establish a connection of the communication link may be referred to as a connection establishment message or a communication means specific protocol message.

Meanwhile, specific forms of the handover get message, the handover put message, the handover select message, and the handover ACK / NACK message are provided. This is described later.

Thus, even when the second electronic device 200 and the third electronic device is outside the NFC communication range, or even within the NFC communication range, even if the mobility is difficult to connect through the NFC communication link, as shown in Figure 11 The communication may be performed by an alternative communication means through the first electronic device 100.

12 is a diagram for explaining a handover mediation protocol according to a third embodiment of the present invention. Here, of course, the same user interaction described with reference to FIG. 10 may be provided.

Referring to FIG. 12, the first electronic device 100 may include the first electronic device 100 through an NFC communication link formed between the first electronic device 100 and the second electronic device 200 described with reference to FIG. 8. 2 may transmit a message for acquiring information related to the first alternative communication means supported by the second electronic device 200 to the electronic device 200 [S810], and obtain information related to the first alternative communication means. The message for doing so may be referred to as a first intermediate get request message. In addition, the second electronic device 200 may transmit a first selection message including information related to the first alternative communication means as a response to the first intermediate acquisition request message [S820].

In addition, the first electronic device 100 is connected to the third electronic device through an NFC communication link formed between the first electronic device 100 and the third electronic device 300 described with reference to FIG. 8. 300, a message for acquiring information related to the second alternative communication means supported by the third electronic device 300 may be transmitted [S830], and a message for acquiring information related to the second alternative communication means is transmitted. It may be called a second intermediate acquisition request message. In addition, the third electronic device 300 may transmit a second selection message including information related to the second alternative communication means as a response to the second intermediate acquisition request message [S840].

Here, since the first electronic device 100 mediates handover between the second electronic device 200 and the third electronic device 300, the first electronic device 100 may be referred to as a handover mediator. In addition, since steps S810 to S840 illustrated in FIG. 12 correspond to steps S610, S630, S650, and S670 of FIG. 9, description thereof will be omitted. The handover request message described with reference to FIG. 9 and the handover get message described with reference to FIG. 11 may correspond to the mediate get request message of FIG. 12. And the structure of the message may be the same.

In addition, as illustrated in FIGS. 12A and 12B, the first electronic device 100 may use one of the second electronic device 200 or the third electronic device 300. In operation S850, it may be determined that the electronic link is to initiate a communication link through the alternate communication means. Alternatively, the user may determine that one of the second electronic device 200 or the third electronic device 300 is an electronic device for initiating a communication link through an alternative communication means.

In addition, the first electronic device 100 may transmit a message requesting the initiation of a communication link through an alternative communication means to the second electronic device 200 or the third electronic device according to the determination [ S860], the message for requesting the start of the communication link may include information related to the first alternative communication means or information related to the second alternative communication means. Here, the message requesting the start of the communication link, the message related to the first alternative communication means or the message related to the second alternative communication means the third electronic device 300 or the second electronic device 200 Since the message to request the initiation of the communication link may be referred to as a mediate put request message.

For example, referring to FIG. 12A, when the first electronic device 100 requests the start of a communication link to the second electronic device 200, the intermediate provision request message may include the first message. 2 Information related to alternative communication means may be included. For example, referring to FIG. 12B, when the first electronic device 100 requests the start of a communication link to the third electronic device 300, the intermediate provision request message may include: Information related to the first alternative communication means may be included.

In addition, the second electronic device 200 or the third electronic device 300 may transmit a third selection message as a response to the intermediate provision request message [S870]. The third selection message may include information on whether to establish establishment of a communication link by an alternative communication means included in the intermediate provision request message.

For example, referring to FIG. 12A, when the first electronic device 100 requests the start of a communication link to the second electronic device 200, the third selection message may include the third message. Information about whether to establish the establishment of a communication link by an alternative communication means supported by the electronic device 300 may be included.

For example, referring to FIG. 12B, when the first electronic device 100 requests the start of a communication link with respect to the third electronic device 300, the third selection message may include: Information regarding whether to confirm establishment of a communication link by an alternative communication means supported by the second electronic device 200 may be included. Here, the mediate get request message and the mediate put request message may include the handover request message described with reference to FIG. 9A and the handover request message of FIG. 9. It may correspond to a Handover Initiate Request Message described with reference to (b). The first selection message and the second selection message may correspond to a handover capability message described with reference to FIG. 9A, and the third selection message is shown in FIG. 9B. ) May correspond to the Handover Initiate Response Message described above with reference to FIG. 11 or the Handover ACK / NACK Message described with reference to FIG. 11. In addition, each corresponding message may have the same structure.

On the other hand, the specific form of the intermediate acquisition request message, the intermediate provision request message, and the selection message will be described later.

The third selection message may be information related to one alternative communication means selected by the first electronic device 100 among the alternative communication means included in the intermediate provision request message. Alternatively, the information may be information related to one alternative communication means selected by the second electronic device 200, the third electronic device 300, or a user.

Meanwhile, referring to FIG. 13, when the user knows which of the second electronic device 200 and the third electronic device 300 starts the connection of the communication link, the first electronic device ( 100) may not transmit the intermediate provision request message. Accordingly, the second electronic device 200 or the third electronic device 300 may initiate connection of a communication link through the selected one alternative communication means [S880].

As a result, even when the second electronic device 200 and the third electronic device are outside the NFC communication range or even within the NFC communication range due to low mobility, it is difficult to connect through the NFC communication link, as shown in FIG. 12. The communication may be performed by an alternative communication means through the first electronic device 100.

14 is a diagram for explaining a handover mediation protocol according to a fourth embodiment of the present invention. Here, of course, the same user interaction described with reference to FIG. 10 may be provided.

Referring to FIG. 14, the first electronic device 100 is a first hand for acquiring information related to first alternative communication means supported by the second electronic device 200 to the second electronic device 200. An Handover Mediate Message may be transmitted [S910]. The first electronic device 100 may further include a first handover selection including information related to first alternative communication means supported by the first electronic device 200 as a response to the first handover mediated message. The message may be received [S930].

Here, steps S910 and S930 may correspond to steps S610 and S630 described with reference to FIG. 9, and thus descriptions thereof will be omitted. Here, the first handover mediated message may correspond to the first handover request message of FIG. 9 and may have the same message structure.

In addition, the first electronic device 100 may transmit a second handover mediation message to the third electronic device 300 [S950]. Unlike the first handover mediated message, the second handover mediated message is not for acquiring information related to an alternative communication means supported by the third electronic apparatus 300, but from the second electronic apparatus 200. This is for delivering the information related to the obtained first alternative communication means, and may correspond to the handover put message described with reference to FIG. 11.

In addition, the third electronic device 300 may transmit a second handover selection message as a response to the second handover mediated message [S970].

Here, the third electronic device 300 is one alternative communication available in the third electronic device 300 based on the information related to the first alternative communication means included in the second handover mediated message. You can choose the means. In addition, the second handover selection message may include information related to one alternative communication means selected by the third electronic device 300. However, if there is no alternative communication means available in the third electronic device 300 or if the third electronic device 300 does not want to connect the communication link by the alternative communication means, the second handover selection message is replaced. Information related to the communication means may not be included.

In addition, after transmitting the second handover selection message, the third electronic device 300 may request the initiation of a communication link to the second electronic device 200 through the selected one alternative communication means. [S990].

On the other hand, a specific form of the handover mediated message and the handover selection message will be described later.

Thus, even when the second electronic device 200 and the third electronic device is outside the NFC communication range, or even within the NFC communication range, even if the mobility is difficult to connect through the NFC communication link, as shown in Figure 14 Through the first electronic device 100, communication may be performed by alternative communication means.

15 is a diagram for explaining a handover mediation protocol according to a fifth embodiment of the present invention.

Referring to FIG. 15, the first electronic device 100 may transmit a first handover mediation message to the second electronic device 200 [S1010]. In addition, the second electronic device 200 includes, as a response to the first handover mediated message, a first handover including information related to first alternative communication means supported by the second electronic device 200. The selection message can be transmitted [S1020]. Here, since steps S1010 and S1020 may correspond to steps S910 and S930 described with reference to FIG. 14, description thereof will be omitted.

In addition, the first electronic device 100 may transmit a second handover mediation message to the third electronic device 300 [S1030]. Unlike the second handover mediated message shown in FIG. 14, the second handover mediated message is information related to second alternative communication means supported by the third electronic apparatus 300 from the third electronic apparatus 300. It is to obtain. Accordingly, the third electronic device may transmit a second handover selection message including information related to the second alternative communication means [S1040].

In addition, the first electronic device 100 may select one of the second electronic device 200 and the third electronic device 300 to initiate a communication link connection through an alternative communication means [ S1050]. The first electronic device 100 may arbitrarily select an electronic device for initiating a communication link connection, or may select the electronic device 100 according to a preset criterion.

For example, as shown in FIG. 15, when the first electronic device 100 selects the second electronic device 200 as an electronic device to initiate connection of the communication link, the first electronic device ( 100 may transmit a third handover mediated message including information related to the second alternative communication means to the second electronic device 200 [S1060]. Since the third handover mediated message is a message for requesting to initiate a connection of a communication link to the second electronic device 200, a handover initiation request message described with reference to FIG. 9 (b). Message or Mediate Put Request Message described with reference to FIGS. 12 and 13, and may have the same message structure.

The second electronic device 200 or the third electronic device 300 may transmit a third handover selection message as a response to the third handover mediated message [S1070]. The third handover selection message may include information on whether to acknowledge the connection of the communication link by the alternate communication means included in the third handover mediation message. Accordingly, the third handover selection message may be a handover initiation response message described with reference to FIG. 9 (b) or a handover response acknowledgment / negation message described with reference to FIG. 11. NACK message) may be respectively corresponded. In addition, each corresponding message may have the same structure.

On the other hand, a specific form of the handover mediated message and the handover selection message will be described later.

 In addition, as shown in FIG. 15, after transmitting the third response message, the second electronic device 200 may initiate connection of a communication link through one alternative communication means [S1080]. .

Here, the one alternative communication means may be selected by the first electronic device 100 to the third electronic device 300 or the user as described above with reference to FIG. 9.

Thus, even when the second electronic device 200 and the third electronic device is outside the NFC communication range or even within the NFC communication range, even if the mobility is difficult to connect through the NFC communication link, as shown in Figure 15 The communication may be performed by an alternative communication means through the first electronic device 100.

16 is a diagram for explaining a handover mediation protocol according to a sixth embodiment of the present invention. Here, of course, the same user interaction as described with reference to FIG. 10 may be provided.

Referring to FIG. 16, the first electronic device 100 may obtain information about the alternative communication means supported by the second electronic device 200 from the second electronic device 200. Connection of the communication link through the device 200 and the alternative communication means may be established [S1150]. That is, the first electronic device 100 establishes a connection between the second electronic device 200 and the communication link by the handover protocol according to an embodiment of the present invention, and then replaces the communication device formed by the handover protocol. The handover mediated protocol may be performed through a communication means.

Accordingly, the first electronic device 100 may transmit a handover request message to the second electronic device 200 through a communication link through the second electronic device 200 and the alternative communication means [ S1110], the second electronic device 200 may transmit the handover selection message as a response to the handover request message [S1130]. In addition, since steps S1170 and S1190 may correspond to steps S750 and S770 of FIG. 11, a detailed description thereof will be omitted.

17 is a diagram for explaining a handover mediation protocol according to a seventh embodiment of the present invention. Here, of course, the same user interaction as described with reference to FIG. 10 may be provided.

Referring to FIG. 17, the first electronic device 100 may obtain information related to alternative communication means supported by the second electronic device 200 from the second electronic device 200 [S1210]. Since step S1210 may correspond to step S710 of FIG. 11, a detailed description thereof will be omitted.

In addition, the third electronic device 300 may transmit a handover request message to the first electronic device 100 [S1230], and the first electronic device 100 may respond to the handover request message. In operation S1250, a handover selection message may be transmitted to the third electronic device 300.

 Here, the handover selection message is different from the information described above with reference to FIGS. 11 to 15, and the information related to the first alternative communication means and the second alternative communication means supported by the second electronic device and the third electronic device. It can contain all of the information.

18 is a diagram for explaining a handover mediation protocol according to an eighth embodiment of the present invention. Here, of course, the same user interaction as described with reference to FIG. 10 may be provided.

Referring to FIG. 18, the first electronic device 100 may obtain information related to alternative communication means supported by the second electronic device 200 from the second electronic device 200 [S1310]. Since step S1310 may correspond to step S710 of FIG. 11, a detailed description thereof will be omitted.

In addition, the first electronic device 100 and the third electronic device 300 to obtain information related to the alternative communication means supported by the third electronic device 300 from the third electronic device 300 It is possible to establish a connection of a communication link through alternative communication means. That is, the first electronic device 100 establishes a connection between the third electronic device 300 and the communication link by the handover protocol according to an embodiment of the present invention, and then replaces the formed by the handover protocol. The handover mediated protocol may be performed through a communication means.

Accordingly, the first electronic device 100 may transmit a handover request message to the third electronic device 300 through a communication link through the third electronic device 300 and the alternative communication means [ S1330], the third electronic device 300 may transmit a handover selection message as a response to the handover request message [S1350].

Thus, the third electronic device 300 transmits information related to the alternative communication means supported by the third electronic device 300 to the second electronic device 200, thereby connecting the communication link by the alternative communication means. May be initiated.

19 to 23 are diagrams for explaining a handover mediation protocol according to a ninth embodiment of the present invention.

In the handover mediated protocol according to the ninth embodiment of the present invention, unlike the handover mediated protocol described with reference to FIGS. 9 to 18, the second electronic device 200 or the third electronic device 300 may be divided into two. It can be made in a separate configuration. That is, the tag and the NFC device may be separated from each other in the second electronic device 200 or the third electronic device 300.

Hereinafter, for convenience of description, it will be assumed that the second electronic device 200 or the third electronic device 300 is a tag. Also, of course, the same user interaction as described with reference to FIG. 10 may be provided.

Referring to FIG. 19, the second electronic device 200 may be a tag, and the third electronic device 300 may be an NFC device.

The first electronic device 100 moves within the NFC communication range of the second electronic device 200 and taps or touches the second electronic device 200, thereby allowing the second electronic device to move. From 200, a message including information related to the first alternative communication means supported by the second electronic device may be received (S1410). Here, the second electronic device 200 may store information related to the first alternative communication means in advance. Since steps S1430 to S1470 illustrated in FIG. 19 may correspond to each of steps S650 to S690 of FIG. 9A described above, description thereof will be omitted.

In addition, referring to FIG. 20, the second electronic device 200 may be an NFC device, and the third electronic device 300 may be a tag. The handover mediation protocol according to FIG. 20 may be configured in the same manner as described above with reference to FIG. 19.

In addition, referring to FIG. 21, the first electronic device 100 moves within the NFC communication range of the second electronic device 200 to read a tag of the second electronic device 200 [ In operation S1510, a handover selection message including information related to first alternative communication means supported by the second electronic device may be received from the second electronic device 200 [S1530]. Here, the second electronic device 200 may store information related to the first alternative communication means in advance. Since steps S1550 and S1570 illustrated in FIG. 21 may correspond to each of steps S750 and S770 described above with reference to FIG. 11B, descriptions thereof will be omitted.

In addition, referring to FIG. 22, the first electronic device 100 moves within the NFC communication range of the second electronic device 200, and the second electronic device 200 is moved from the second electronic device 200. In operation S1610, a first selection message including information related to the first alternative communication means supported by the UE may be received. Here, the second electronic device 200 may store information related to the first alternative communication means in advance. Steps S1630, 1650, and 1670 illustrated in FIG. 22 may correspond to steps S860, S870, and S880 described above with reference to FIG. 12, and thus descriptions thereof will be omitted.

In addition, referring to FIG. 23, the first electronic device 100 moves within the NFC communication range of the second electronic device 200, and the second electronic device 200 is moved from the second electronic device 200. In operation S1710, a first handover selection message including information related to the first alternative communication means supported by the UE may be received. Here, the second electronic device 200 may store information related to the first alternative communication means in advance. Steps S1730, S1750, and S1770 illustrated in FIG. 23 may correspond to steps S950, S970, and S990 described above with reference to FIG. 13, and thus descriptions thereof will be omitted.

24 is a diagram for explaining a handover mediation protocol according to a tenth embodiment of the present invention.

As illustrated in FIG. 24, the first electronic device 100 may perform a handover mediation protocol for a plurality of electronic devices. For example, referring to FIG. 24, the first electronic device 100 may obtain information related to alternative communication means supported by the second electronic device 200 from the second electronic device 200. [S1810]. In addition, the first electronic device 100 moves within the NFC communication range of the third electronic device 300 [S1820], and the second electronic device 300 supports the third electronic device 300. Information related to the alternative communication means can be delivered [S1830]. Accordingly, as described in step S770 of FIG. 11, the third electronic device 300 transmits a connection establishment message or a communication means specific protocol message requesting connection of a communication link to the second electronic device 200. A communication link can be established [S1840]. In addition, the first electronic device 100 moves within the NFC communication range of the fourth electronic device [S1850], and the fourth electronic device 400 is connected to the alternative communication means supported by the second electronic device 200. Related information can be conveyed [S1860]. Accordingly, as described in step S770 of FIG. 11, the fourth electronic device 400 transmits a connection establishment message or a communication means specific protocol message requesting connection of a communication link to the second electronic device 200. A message for establishing a communication link may be transmitted [S1870].

25 is a diagram for explaining a handover mediation protocol according to an eleventh embodiment of the present invention.

Referring to FIG. 25, the first electronic device 100 may obtain information related to an alternative communication means supported by the second electronic device 200 from the second electronic device 200 [S1910]. In addition, the first electronic device 100 may move within the NFC communication range of the third electronic device 300 [S1920]. The first electronic device 100 transmits information related to an alternative communication means supported by the second electronic device 200 to the third electronic device 300 and that the third electronic device 300 supports. Information related to the alternative communication means can be obtained [S1930]. In addition, the first electronic device 100 moves again within the NFC communication range of the second electronic device 200 [S1940], and supports the second electronic device 200 in the third electronic device 300. Information related to the alternative communication means can be delivered [S1950]. Accordingly, as described in step S770 of FIG. 11, the second electronic device 200 transmits a connection establishment message or a communication means specific protocol message requesting connection of a communication link to the third electronic device 300. The establishment message of the communication link may be transmitted [S1960].

FIG. 26 illustrates a handover mediation protocol according to a twelfth embodiment of the present invention. FIG.

Referring to FIG. 26, when the second electronic device 200 transmits a first handover request message to the first electronic device 100 [S2010], the first electronic device 100 may transmit the second electronic device 100 to the second electronic device 100. The handover waiting message may be transmitted to the electronic device 200 [S2020]. Here, when the second electronic device 200 receives the handover waiting message, the second electronic device 200 may wait for the reception of the handover providing message for a predetermined time.

In addition, the first electronic device 100 may transmit a second handover request message to the third electronic device 300 [S2030], and receive a handover selection message from the third electronic device [S2040]. ].

Accordingly, the first electronic device 100 may transmit the handover providing message to the second electronic device 200 [S2050], and receive a handover response message from the second electronic device 200. There is [S2060]. As described in step S750 of FIG. 11, the handover response message may include information on whether to acknowledge the connection of the communication link by the alternate communication means and which electronic device initiates the connection of the communication link. .

27 is a diagram for explaining a handover mediation protocol according to a thirteenth embodiment of the present invention.

Referring to FIG. 27A, the first electronic device 100 taps and tags each of the second electronic device 200 and the third electronic device 300 once. Alternatively, a communication link by an alternative communication means can be established by touching. This may be referred to as 2-tap, 2-tag or 2-touch.

Also, referring to FIGS. 27B, 28A, and 28B, the first electronic device 100 may be the second electronic device 200 and the third electronic device 300, respectively. Tap, tag, or touch once for, and then again request for initiation of a communication link to the second electronic device 200 or the third electronic device 300. Communication taps by alternative communication means can be established by tapping, tagging or touching. Here, as shown in FIG. 27B, when the first electronic device 100 requests the start of a communication link to the second electronic device 200, the first electronic device 100 is used. 3 taps, tags, or touches because the mobile device moves back from the NFC communication range of the third electronic device 300 to the NFC communication range of the second electronic device 200. It can be called tagging or 3-touch. However, as shown in FIG. 28A, when the first electronic device 100 requests the start of a communication link to the third electronic device 300, the first electronic device 100 is used. ) Taps, tags, or touches the third electronic device 300 again, and may be referred to as 3-tap, 3-tagging, or 3-touch, otherwise, FIG. 28. As shown in (b) of FIG. 2, it may be referred to as 2-tap, 2-tagging or 2-touch.

Until now, with reference to FIGS. 9 to 28, it is assumed that all of the first electronic device 100 to the third electronic device 300 support the handover mediated protocol. It was described.

Hereinafter, for convenience of description, when the first electronic device 100 supports a handover protocol, and the second electronic device 200 or the third electronic device 300 does not support a handover mediated protocol. This will be described.

For example, when the second electronic device 200 is a device that does not support the handover mediated protocol, the second electronic device 200 receives a handover request message received from the first electronic device. A handover selection that does not include information related to the alternate communication means, in response to a handover get message, a handover mediate message, or a mediate get request message. A message (Handover Select Message) can be transmitted. At this time, the first electronic device 100, it can be seen that the second electronic device 200 does not support the handover protocol, as shown in (f) of FIG. 10, the output unit 150 ) May output a message indicating that the second electronic device does not support the handover mediated protocol. On the other hand, the handover request message may include identification information indicating that the message to initiate the handover mediated protocol, the structure of a specific message will be described later.

Accordingly, the first electronic device 100 is supported by the second electronic device 200 or the third electronic device 300 from the second electronic device 200 or the third electronic device 300. When receiving a handover selection message that does not include information related to the alternative communication means, through the output unit 150 of the first electronic device 100, the second electronic device 200 or the third electronic The device 300 may output a message indicating that the device does not support the handover mediated protocol or a message indicating that the handover mediated protocol cannot be performed. Accordingly, the first electronic device 100 may move within the NFC communication range of another electronic device and instruct the execution of the handover mediation protocol to the other electronic device.

Hereinafter, a data structure according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. The structure of data to be described below is merely an example, and the technical idea of the present invention is not limited to a specific data structure.

29 illustrates a general structure of a handover protocol and a handover mediated protocol message according to embodiments of the present invention. As described above, the message used in the handover process and the handover mediating process may be broadly composed of a handover request message and a handover selection message.

In addition, in FIGS. 9 to 28, in order to describe various embodiments of the handover mediated protocol, various terms that may correspond to other than the terms of a handover request message and a handover select message are used. However, all of the same or similar concepts as the handover request message and the handover selection message may have the same structure.

Therefore, hereinafter, a handover request message and a handover selection message will be described for convenience of description.

Referring to the top of FIG. 29, the handover request message may include a handover request record (hereinafter referred to as an Hr record) and one or more NDEF (NFC Data Exchange Format) records. In addition, the handover selection message (hereinafter, Hs record) may include a handover selection record and one or more NDEF records.

The NDEF record may include specific information on the alternate communication means.

More specifically, the type of information included in the NDEF record included in the handover request message may vary.

For example, the information that the NDEF record includes may include information for identifying an alternate communication link. That is, the handover communication means record may provide information on what alternative communication means is supported by the second electronic device 200 or the third electronic device 300. 3 may be provided to the electronic device 300. In this document, an NDEF record including information for identifying an alternate communication link will be referred to as a handover carrier record.

Meanwhile, the information included in the NDEF record may include configuration information for forming an alternate communication link. In this document, an NDEF record including setting information necessary for forming an alternative communication link, for example, a password, an address, etc. necessary for forming a link, will be referred to as a communication means setting record.

In this case, the communication means setting record may further include information for identifying what the alternative communication means.

Detailed description of the handover communication means record and the communication means setting record will be described later.

Referring to the interruption of FIG. 29, the handover request / selection record according to an embodiment of the present invention may include at least one of a header (Hdr), a version field, and one or more alternative communication means records (hereinafter, ac records). The alternate communication means record may define an alternate communication means requested / selected by the handover request / selection message. In addition, the handover request / selection record may include fewer or more information fields.

Referring to the lower part of FIG. 29, an ac record according to an embodiment of the present invention includes a header Hdr, a carrier power state, a carrier data reference, and an auxiliary data indicator. (Aux Data Ref Count) and at least one of information fields for at least one auxiliary data indicator.

The communication means data indicator and the auxiliary data indicator may indicate a corresponding NDEF record shown at the top of FIG. 9.

Hereinafter, each information mentioned with reference to FIG. 29 will be described in more detail.

30 to 32 illustrate an example of a handover request message according to embodiments of the present invention.

Referring to FIG. 30, the handover request message may include the third electronic device 300 or the first electronic device 100 with respect to the second electronic device 200 or the third electronic device 300. 2 may be used to transmit information related to alternative communication means supported by the electronic device 200. Here, the handover provision message, the mediate put request message, the handover mediate message, and the handover initiation request message described above with reference to FIGS. 9 to 23 are described. Request Message) may correspond to the handover request message and may have the same message structure.

In this case, the handover request message may include a handover request record and one or more NDEF records, as shown in FIG. 30. For example, the handover request message may start with a handover request record and end with an NDEF record. More specifically, the handover request message may start with a handover request record including a flag set to start message (MB) and end with an NDEF record with a flag set to end message (ME). Since the handover request message should include at least one alternative carrier, it cannot have a record in which both the MB and ME flags are set. Since the handover request message should include at least one alternative communication means, it cannot have a record in which both the MB and ME flags are set. The NDEF record may be one of a handover communication means record and a communication means setting record according to the characteristics of the alternate communication means. In addition, the NDEF record may be composed of auxiliary data. A detailed description of the NDEF record will be given later.

In addition, referring to FIG. 31, the handover request message may include the second electronic device 200 from the second electronic device 200 or the third electronic device 300 by the first electronic device 100. Alternatively, the information may be used to obtain information related to an alternative communication means supported by the third electronic device 300. Here, the handover get message, the mediate get request message, and the handover media message described above with reference to FIGS. 9 to 23 may correspond to the handover request message. May have the same message structure.

In this case, the handover request message does not include the NDEF record including the information related to the alternative communication means, as shown in FIG. 31, and includes the information for identifying the alternative communication means. It may include a record (Handover Carrier record, Hc). The handover communication means record may include a header Hdr, a carrier type format (CTF), a carrier type length (Carrier Type Len.), And a carrier type (Carrier Type). Here, when the handover request message is for performing a handover mediated protocol, the communication means type may be a handover mediator (Hm). In other words, the communication means type may serve as identification information indicating the initiation of a handover mediated protocol. The Hm is a name used arbitrarily, and thus may be modified and used according to the symbol of those skilled in the art. Hereinafter, for convenience of description, it will be denoted by Hm.

In addition, referring to FIG. 32, the handover request message may be used to deliver information related to an alternative communication means supported by another electronic device in a handover mediated protocol. Here, the mediate request message described with reference to FIG. 12 and the handover mediate message described with reference to FIGS. 14 and 15 may correspond to the handover request message and have the same structure. It can have

In this case, the handover request message may include both a handover communication means record including the communication means type Hm and an NDEF record including information related to the alternative communication means. Thus, it may indicate that the mediate put request message and the handover mediate message are for a handover mediated protocol.

33 illustrates an example of a handover selection message according to an embodiment of the present invention.

The handover selection message may include information related to the alternative communication means supported by the handover selection device from among the alternative communication means included in the handover request message received by the handover selection device from the handover request device. Can be used to provide

In addition, the handover selection message may be used to provide a handover mediator with information related to alternative communication means supported by another electronic device to perform handover mediation.

Referring to the top of FIG. 33, the structure of the handover selection message may be the same as the structure of the handover request message described with reference to FIG. 28.

In addition, referring to the bottom of FIG. 33, the handover selection message may include a single record in which both a message start (MB) and a message end (ME) are set. That is, in this case, there may be a situation where no alternative communication means supported by the handover selector is supported among the alternative communication means supported by the handover requester.

A response message, a handover initiation response message, a select message, and the like, described with reference to FIGS. 9 to 23, may correspond to the handover selection message. It may have a structure. In addition, in the case of a handover response acknowledgment message (Handover ACK Message), as a response message for affirming the connection of the communication link, it may include information on which device will initiate the connection of the communication link, As shown in FIG. 1, the handover response acknowledgment record and the NDEF record may be included. In addition, the Handover NACK message is a response message denying the connection of the communication link, and as shown in the lower part of FIG. Only NACK Record) may be included.

Hereinafter, the handover request record will be described in more detail.

34 shows an example of a handover request record according to an embodiment of the present invention.

The handover request record may include a list of alternative communication means that the handover request device can use for communication with the handover selection device.

The handover request record may indicate at least one replacement record.

Referring to FIG. 34, the handover request record includes information on a major version, a minor version, a collision resolution record, and alternative carrier record 1 through n. It may include at least one of.

Each alternative communication means record may specify alternative communication means supported by the handover requesting device for communication between the handover selecting device and the handover requesting device. Information on the alternate communication means specified by each alternate communication means record may be included in an NDEF record included in the handover request message.

Hereinafter, the handover selection record will be described in more detail.

35 illustrates an example of a handover selection record according to embodiments of the present invention.

The handover selection record is a response message to the handover request message received by the second electronic device 200 or the third electronic device 300 from the first electronic device 100. 200 or information related to an alternative communication means supported by the third electronic device 300.

As shown in FIG. 35, the handover selection record may include at least one of a major version, a minor version, information on alternative communication means records 1 to n, and information on an error.

The alternative communication means code included in the handover selection record may include information related to the alternative communication means commonly supported by the second electronic device 200 and / or the third electronic device 300.

In addition, the order of the alternative communication means included in the handover selection record may indicate the priority of the alternative communication means preferred by the handover selection device. For example, the alternate communication means indicated in the alternate communication means record 1 may have a higher priority than the alternate communication means indicated in the alternate communication means record n.

Hereinafter, a handover communication means record which is an example of the NDEF record will be described in detail.

36 shows an example of a handover communication means record according to an embodiment of the present invention.

The handover communication means record may include information for identifying the alternate communication means.

 Referring to FIG. 36, the handover communication means record includes a carrier type format (hereinafter referred to as CTF), a carrier type length, a carrier type, and a carrier data. It may include at least one of.

The communication means type format may provide a function of indicating a structure of a value described in the communication means type to be described later.

For example, the communication means type format may correspond to at least one of an NFC Forum well-know type, a media-type defined in RFC 2046, an absolute URI defined in RFC 3986, and an NFC external type.

The communication means type length may refer to the length of the communication means type to be described later.

The communication means type may provide a unique identification of the alternate communication means. The value of the carry-up type should follow the structure, encoding and format according to the communication means type format.

Based on at least one of the communication means type format, the communication means type length, and the communication means type, more specifically, based on the communication means type, what is the alternative communication means supported by the first electronic apparatus 100? 2 may be identified by the electronic device 200 or the third electronic device 300.

The communication means data may comprise additional information about the alternative communication means.

The handover communication means record may be included in the handover request message as an NDEF record of the handover request message.

Hereinafter, the alternative communication means record (ac Record) will be described in detail.

37 shows an example of an alternate communication means record according to an embodiment of the present invention.

The alternate communication means record may be included in the handover request record or the handover selection record.

As shown in FIG. 37, the alternate communication means record includes a communication means power state (CARRIER POWER STATE, or CPS), a communication means data indicator (CARRIER_DATA_REFERENCE), a number of auxiliary data indicators (AUXILIARY_DATA_REFERENCE_COUNT), and auxiliary data indicators 1 to N. It may include at least one of (AUXILIARY_DATA_REFERENCE 1 TO N).

The communication means power state indicates the power state of the alternate communication means. The communication means power state may be, for example, at least one of inactive, active, activating, or unknown.

For example, when the current power state of the alternate communication means is active and the carrier configuration data is provided, it may indicate that the alternate communication means is immediately available.

Further, for example, when the power state of the alternate communication means is activating, it may indicate that a wait is required until a connection of the communication link through the alternate communication means is attempted. In addition, when the first electronic device 100 selects an alternative communication means in which a power state is active, the first electronic device 100 may be configured to be connected from the second electronic device 200 or the third electronic device 300. It can wait for the handover response message. In addition, when the second electronic device 200 or the third electronic device 300 recognizes that the power state of the alternative communication means is active, the second electronic device 200 or the third electronic device 300 ) May begin the activation process immediately after sending the handover response message.

Also, for example, when the first electronic device 100 transmits the handover request message including information related to one or more alternative communication means, the second electronic device 200 or the third electronic device. 300 may send a handover response message that declares that the power state of the one or more alternative communication means is inactive. The first electronic apparatus 100 may specify one alternative communication means in a next handover request message, and the second electronic apparatus 200 or the third electronic apparatus 300 may perform the handover request message. In response to it, one alternative communication means may be declared active or activating.

In addition, for example, when the second electronic device 200 or the third electronic device 300 is a tag, the second electronic device 200 or the third electronic device 300 may have a large number. It is possible to provide an alternative communication means that is inactive. This may mean that the user must activate the communication means circuit. Therefore, by deactivating the power supply of the alternative communication means until a specific communication means is selected from the plurality of alternative communication means, it is possible to provide an effect of saving power.

Meanwhile, the communication means data indication may provide a function of indicating the NDEF record shown in the upper part of FIG. 27. As described above, the NDEF record may be a handover communication means record or a communication means setting record.

The number of auxiliary data indicators may refer to the number of auxiliary data indicators that follow.

The auxiliary data indicator may indicate an NDEF record that provides additional information about the alternate communication means.

Various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware or a combination thereof.

According to a hardware implementation, embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, microcontrollers, microprocessors, and electrical units for performing the functions. 180).

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. In addition, the software code may be stored in the memory unit 160 and executed by the controller 180.

In the above-described method for controlling an electronic device, the steps constituting each embodiment are not essential, and therefore, each embodiment may optionally include the above steps. In addition, each step constituting each embodiment is not necessarily to be performed in the order described, the steps described later may be performed before the steps described first.

In addition, the control method of the electronic device according to the present invention may be implemented in the form of a code or a program for performing the same, the code or program may be stored in a computer-readable recording medium.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings. In addition, the embodiments described in this document may not be limitedly applied, but may be configured by selectively combining all or part of the embodiments so that various modifications may be made. Furthermore, the steps constituting each embodiment may be used separately or in combination with the steps constituting another embodiment.

According to the present invention, an electronic device and a method of operating the electronic device capable of forming a connection between two or more electronic devices more effectively can be provided by the handover media device transmitting the connection information between two or more electronic devices to the counterpart. .

Claims (18)

In the method of mediating a communication link by the first electronic device,
Receiving a first handover request message from a second electronic device;
In response to the first handover request message, transmitting a handover waiting message to the second electronic device;
In response to the handover wait message, transmitting a second handover request message to a third electronic device;
Receiving a handover selection message from the third electronic device in response to the second handover request message;
In response to the handover selection message, sending a handover put message to the second electronic device; And
Establishing a communication link for connecting the first electronic device to the third electronic device through replacement carrier information;
When the second electronic device receives the handover waiting message, the second electronic device waits to receive the handover provision message;
The handover providing message indicates a message for providing a handover between the second electronic device and the third electronic device;
The first handover request message and the second handover request message include replacement carrier information supported by the second electronic device,
And wherein the handover selection message and the handover offer message include alternate carrier information provided by the third electronic device. delete The method of claim 1,
If the alternate carrier information includes a plurality of alternate carriers, the alternate carrier information that establishes the communication link is automatically determined by the first electronic device based on carrier priority, or by user selection via a user interface. Method of communication link, characterized in that determined by. delete delete delete delete delete delete In a first electronic device for the mediation of a communication link,
Receive a first handover request message from a second electronic device,
In response to the first handover request message, sending a handover wait message to the second electronic device,
Send a second handover request message to a third electronic device in response to the handover waiting message,
In response to the second handover request message, receiving a handover selection message from the third electronic device,
Send a handover put message to the second electronic device in response to the handover selection message,
A communication unit for establishing a communication link for connecting the first electronic device and the third electronic device through the alternate carrier information,
When the second electronic device receives the handover waiting message, the second electronic device waits to receive the handover provision message;
The handover providing message indicates a message for providing a handover between the second electronic device and the third electronic device;
The first handover request message and the second handover request message include replacement carrier information supported by the second electronic device,
And the handover selection message and the handover providing message include replacement carrier information provided by the third electronic device. delete The method of claim 10,
If the alternate carrier information includes a plurality of alternate carriers, the alternate carrier information that establishes the communication link is automatically determined by the first electronic device based on carrier priority, or by user selection via a user interface. The first electronic device, characterized in that determined by. The method of claim 10,
Wherein the first handover request message and the second handover request message include a handover carrier record used to identify an alternate carrier. delete delete delete delete delete

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